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Answer:
Resistance of conductor = 181.52 × 10² ohm
Explanation:
Formula for resistance of conductor = ¶l/A
Where, ¶= resistivity.
l= length of conductor
A= Area of cross section of conductor(since we assume conductor to be cylindrical in nature)
Given, resistivity as 1.9 × 10^-6 ohm m
and length = 300 metre
and area = πr² = 3.14× (0.01 × 10^-2)²......
In the above step since radius was given in cm in question so we converted that to metre as 1 cm = 10^-2 metre.
put all the values in formula mentioned above....
So then Resistance of conductor =
1.9× 10^-6 × 300/3.14× (0.01 ×10^-2)²
After calculation
Resistance of conductor = 181.52× 10² ohm
I hope it helps....please feel free to ask any doubt related to solution
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